JP6979727B1 - Work table and trolley - Google Patents

Abstract

PROBLEM TO BE SOLVED: To not only make a work table movable in a safe and stable state, but also to make it available as a trolley capable of carrying other luggage. SOLUTION: A top plate 2 is provided with at least four caster members 4 at an edge portion, and the caster member is a clamp member 6 having two support plates 6a capable of sandwiching the edge portion of the top plate, and one support plate. The wheel 7 is attached to the top plate, and the clamp member is attached so as to be upside down with respect to the top plate, the surface 21 of the top plate is directed upward, and the leg portion 3 is erected downward. , The working posture X in which the wheels are positioned on the back surface 22 side of the top plate, the surface 21 of the top plate is directed downward, the legs are erected upward, and the wheels are positioned on the front surface 21 side of the top plate. It can be displaced between the moved posture Y and the moved posture Y. [Selection diagram] FIG. 4

Description

The present invention relates to a work platform and a carriage used as a scaffold.

Conventionally, there is a work table provided with a rectangular top plate and a pair of ladder-shaped legs provided so as to be foldable on the back side surface of the top plate. It is a work table for workers to climb the legs, stand on the top plate, and work at high places using the top plate as a scaffold. Since such a workbench is a heavy object manufactured to be sturdy in consideration of safety, a considerable amount of labor is required to move the workbench.

To solve such a problem, for example, Patent Document 1 discloses a work table that can be moved in a folded state. This workbench is equipped with two casters, a universal caster and a fixed caster, on one end side edge of the top plate, which facilitates the upright work of the workbench and improves maneuverability in the upright state. It is disclosed that it is possible to move it suitably.

Japanese Unexamined Patent Publication No. 2019-214852

However, the workbench of Patent Document 1 stands up in a folded state, and the worker operates and moves the casters while supporting the upright state, and the worker moves the workbench which is a heavy object. It must be operated in an unstable standing state. Further, the work of using such a workbench as a scaffold requires various tools and equipment, but the workbench and other equipment and the like cannot be carried at the same time, which is inefficient.

The present invention has been made in view of this point, and an object of the present invention is to use the workbench as a trolley capable of not only moving the workbench in a safe and stable state but also carrying other luggage. To make it possible.

In order to achieve the above object, the first invention is a workbench-combined trolley including a rectangular top plate and a pair of foldable legs provided on the back surface side of the top plate. The top plate is provided with at least four caster members on the edge thereof, and the caster members are attached to a clamp member having two support plates capable of sandwiching the edge portion of the top plate and one of the support plates. The wheel has a wheel, and the clamp member is attached to the top plate so as to be upside down, and the surface of the top plate is turned upward and the leg portion is erected downward. The work posture is positioned on the back surface side of the top plate, the surface of the top plate is directed downward, the legs are erected upward, and the wheels are positioned on the front surface side of the top plate. It is characterized in that it can be displaced between the moving posture and the moving posture.

According to the above configuration, in the working posture in which the operator stands on the front surface side of the top plate, the wheels can be positioned on the back surface side of the top plate, so that the wheels do not interfere with the operator and safety is ensured. be able to. On the other hand, in the moving posture, if the wheels are positioned on the front surface side of the top plate and the work table / trolley is inverted so that the front surface and the back surface of the top plate are inverted, the wheels come into contact with the ground. Since the workbench-combined trolley is supported by at least four wheels, it can move in a stable state and the burden on the operator is reduced. Further, it is possible to place luggage such as other equipment on the top plate of the inverted workbench and workbench, and the workbench can be used as a bogie. Since it is possible to move the work table and other luggage at the same time, work efficiency can be significantly improved. Further, the mutual displacement between the working posture and the moving posture can be easily performed by turning the clamp member to which the wheel is attached upside down with respect to the top plate.

In the second invention, in the first invention, the clamp member is characterized in that the two support plates and the side plates connecting the support plates have a U-shape that opens toward the top plate. And.

According to the above configuration, the clamp member can secure the cross-sectional strength by the U-shape. Therefore, in the moving posture, not only the work table, which is a heavy object, but also other luggage can be placed on the top plate, and the strength can be maintained and the cargo can be safely transported.

In a third aspect of the invention, in the second invention, the caster member further has a shaft member extending from the side plate and inserted into the side surface of the edge of the top plate, and the clamp member has the support plate. The shaft member can be moved back and forth between the state in which the edge portion is sandwiched and the state in which the support plate is pulled out from the edge portion, and the support plate is pulled out from the edge portion to the outside. It is characterized by being rotatable around.

According to the above configuration, by rotating the shaft member around the shaft member with the clamp member pulled out, the clamp member and the wheel are turned upside down with respect to the top plate, and the wheel is positioned on the back surface side or the front surface side of the top plate. Since this is possible, mutual displacement between the working posture and the moving posture can be performed more easily.

A fourth aspect of the invention is characterized in that, in the third aspect, the caster member and the top plate are provided with fixing means for fixing the clamp member in a state where the support plate sandwiches the edge portion.

According to the above configuration, by fixing the clamp member to the top plate by the fixing means, it is possible to prevent the caster member from falling off from the edge portion of the top plate and ensure safety.

A fifth aspect of the invention is characterized in that, in the third or fourth invention, the shaft member moves back and forth together with the clamp member, and a retaining portion is provided at an end portion on the top plate side.

According to the above configuration, the caster member does not fall off from the edge portion of the top plate due to the retaining portion of the shaft member, so that the caster member can be prevented from being lost and the work efficiency can be improved.

In the sixth aspect of the invention, in any one of the third to fifth inventions, the legs are prevented from opening during the working posture and are placed on the back surface side of the top plate during the moving posture. It is characterized in that a fall prevention and opening prevention member that prevents the load from falling is installed.

According to the above configuration, the fall-preventing opening-preventing member plays the role of preventing the legs from opening in the working posture, and plays the role of preventing the load such as luggage placed on the top plate from falling in the moving posture. Therefore, it is possible to have both safety and convenience.

Not only can the workbench be moved in a safe and stable state, but it can also be used as a trolley that can carry other luggage, providing both safety and convenience.

It is a perspective view which shows the working posture of the work table and the trolley which concerns on embodiment of this invention. It is a perspective view of a caster member. It is an exploded perspective view of a caster member and a top plate. It is a perspective view which shows the moving posture of the work table and the carriage which concerns on embodiment of this invention. It is a schematic diagram which shows the working posture of the work table and the trolley which concerns on embodiment of this invention. It is sectional drawing which shows the reversal mechanism of a caster member. It is sectional drawing which shows the reversal mechanism of a caster member. It is sectional drawing which shows the reversal mechanism of a caster member. It is sectional drawing which shows the reversal mechanism of a caster member. It is a schematic diagram which shows the state in the middle of displacement of the work table and the carriage which concerns on embodiment of this invention. It is a schematic diagram which shows the moving posture of the work table and the carriage which concerns on embodiment of this invention. It is a perspective view which shows the work table and the trolley which concerns on another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

In some drawings, arrows indicate up and down and front and back directions. In the following description, the description will be given according to the direction of the arrow in the drawing, but the front-rear direction is not limited when the workbench-combined trolley of the present embodiment is used.

As shown in FIG. 1, the workbench-combined trolley 1 of the present embodiment includes a rectangular top plate 2 and a pair of legs 3 and 3 foldable toward the back surface 22 side of the top plate 2. .. In this workbench-combined trolley 1, a ladder-shaped leg 3 is installed upright on the ground, and a worker climbs the leg 3 to stand on the surface 21 of the top plate 2 and works using the top plate 2 as a scaffold. It is for doing, for example, called a standing horse. The workbench-combined trolley 1 of the present embodiment has not only a function as a workbench but also a function as a trolley.

The top plate 2 is a rectangular plate-shaped member that is long in the front-rear direction, and is provided with a pair of legs 3 and 3 on the edge portion on the short side. The edge on the long side is provided with at least two caster members 4 at least two at a distance from each other in the front-rear direction, for a total of at least four caster members 4. The top plate 2 may have any configuration, but in the present embodiment, a plurality of square pipe members extending in the front-rear direction are connected to form the top plate 2.

As the legs 3 and 3, the ones used for the conventional work table can be used, and the height may be variable. It is preferable that the fall prevention and opening prevention member 5 is erected between the legs 3 and 3. A conventional workbench configuration can be applied to the connecting portion between the legs 3 and 3 and the top plate 2. Any existing component may be used for the opening stopper member 3a attached to the connecting portion. In the present embodiment, an L-shaped member 3a is used as the opening stopper, but a triangular opening stopper may be used.

A pair of fall prevention and opening prevention members 5 are erected between the legs 3 and 3 along the edge on the long side of the top plate 2, so that the back surface 22 side of the top plate 2 is the leg portion. The four sides are framed by the opening stopper member 5 which also serves as a fall prevention member. The fall prevention opening prevention member 5 plays a role of preventing the legs 3 and 3 from opening in the moving posture Y in the working posture X, and prevents the load placed on the back surface 22 of the top plate 2 from falling in the moving posture Y. can do. The fall prevention combined opening prevention member 5 is removable from the legs 3 and 3. For example, when the load to be placed on the top plate 2 is larger than the size of the top plate 2, the fall prevention combined opening prevention member 5 is used. You may remove it and use it.

As the fall prevention and opening prevention member 5, various members such as a stretchable member, a foldable member, and a wide plate-shaped member can be used. In the present embodiment, the fall prevention combined opening prevention member 5 is configured by connecting two long members 5a and 5b extending in the longitudinal direction of the top plate 2 in the longitudinal direction. One long member 5a has a larger outer diameter than the other long member 5b, and the other long member 5b can be inserted and stored inside the one long member 5a to prevent falling. The combined opening stopper member 5 can be reduced to about half the length. An engaging hole 50a is provided at the end of one long member 5a, and an engaging convex portion 50b is provided at the end of the other long member 5b. The other long member 5b housed inside one long member 5a is pulled out, and the engaging convex portion 50b is fitted into the engaging hole 50a to engage with the other long member 5a. It is fixed in a state of being connected to the long member 5b of. The ends of the fall prevention and opening stopper 5 are detachably fixed to the legs 3 and 3, respectively. The fixed portion is locked with a member having a locking function such as a gravity lock.

As shown in FIGS. 2 and 3, the caster member 4 includes a clamp member 6 having two support plates 6a and 6a capable of sandwiching the edge portion of the top plate 2, and a wheel 7 attached to one support plate 6a. And a shaft member 8 for attaching to the edge portion of the top plate 2.

The clamp member 6 has a U-shape in which two flat plate-shaped support plates 6a and 6a and a side plate 6b connecting the support plates 6a and 6a open toward the top plate 2. When the edge portion of the top plate 2 is inserted into this U-shaped opening, the support plates 6a and 6a sandwich the edge portion of the top plate 2 by vertically sandwiching the top plate 2 from the front surface 21 side and the back surface 22 side. .. The side plate 6b extends vertically to connect the two support plates 6a and 6a and faces the side surface of the top plate 2 edge portion. A shaft member 8 extending from the substantially central portion of the side plate 6b toward the top plate 2 and being inserted into the side surface of the edge portion of the top plate 2 is attached.

The clamp member 6 can move forward and backward between a state in which the support plates 6a and 6a sandwich the edge portion and a state in which the support plates 6a and 6a are pulled out from the edge portion. Further, the clamp member 6 can rotate around the shaft member 8 in a state where the support plates 6a and 6a are pulled out from the edge portion, and can be turned upside down with respect to the top plate 2 via the shaft member 8. It is attached.

The shaft member 8 is inserted into the inside of the top plate 2 through the insertion hole 2a provided on the side surface of the edge portion of the top plate 2. At the end of the shaft member 8 on the top plate 2 side, a retaining portion 9 is provided inside the side surface of the edge portion of the top plate 2. The shaft member 8 moves back and forth together with the clamp member 6. By providing the retaining portion 9, the caster member 4 is attached so as not to fall off from the side surface of the edge portion of the top plate 2.

The caster member 4 and the top plate 2 are provided with fixing means 12 for fixing the clamp member 6 in a state where the support plates 6a and 6a sandwich the edges. Specifically, the fixing means 12 is a stopper 12a provided on the side surface of the edge portion of the top plate 2 and a stopper insertion hole 12b provided in the side plate 6b of the clamp member 6. As shown in FIG. 3, the stopper 12a protrudes from the side surface of the edge portion of the top plate 2. The side plate 6b is provided with stopper insertion holes 12b, 12c for inserting the stopper 12a on both sides of the shaft member 8. The member used for the stopper 12a is not limited, but in the present embodiment, the gravity lock is used as the stopper 12a.

By reversing the caster member 4, the stopper 12a is inserted into one of the stopper insertion holes 12b and 12c. For example, as shown in FIG. 3, when the support plates 6a and 6a grip the edges with the wheels 7 facing downward, the stopper 12a is inserted into one of the stopper insertion holes 12c. When the caster member 4 is turned upside down and the support plates 6a and 6a grip the edges with the wheels 7 facing upward, the stopper 12a is inserted into the other stopper insertion hole 12b. When the stopper 12a is inserted into any of the stopper insertion holes 12b, 12c, the locking mechanism operates and the support plates 6a, 6a are fixed in a state of sandwiching the edge portion.

In the workbench-combined trolley 1 of the present embodiment, as shown in FIG. 1, the surface 21 of the top plate 2 is directed upward, the legs 3 are erected downward, and the wheels 7 are placed on the back surface of the top plate 2. The working posture X positioned on the 22 side, and as shown in FIG. 4, the surface 21 of the top plate 2 is directed downward, the legs 3 are erected upward, and the wheels 7 are placed on the surface of the top plate 2. It can be displaced between the moving posture Y positioned on the 21 side. In the working posture X, the worker can climb the legs 3 to stand on the front surface 21 of the top plate 2 and work using the top plate 2 as a scaffold. In the moving posture Y, the back surface side 22 of the top plate 2 can be used. It is possible to put luggage on the trolley and move it as a trolley.

Next, based on FIGS. 5 to 11, the two postures of the workbench and trolley 1 and their displacement processes will be described.

First, in the working posture X as shown in FIG. 5, the top plate 2 has the surface 21 facing upward, and the legs 3 stand on the ground. At this time, as shown in FIG. 6, the caster member 4 is in a state where the wheel 7 is projected toward the back surface 22 side of the top plate 2. The stopper 12a protrudes from one of the stopper insertion holes 12c provided in the side plate 6b, and the caster member 4 is fixed in a state where the support plates 6a and 6a sandwich the top plate 2. Since the flat support plate 6a not provided with the wheels 7 faces the surface 21 of the top plate 2, the operator does not have a risk of stumbling on the caster member 4, and can work safely. The square pipe member 23 that constitutes the edge portion of the top plate 2 and through which the shaft member 8 is inserted includes a cylindrical insertion pipe 24 in the inner portion through which the shaft member 8 is inserted. The shaft member 8 is inserted into the insertion tube 24 so that the shaft member 8 can rotate smoothly.

To displace from the working posture X, first, the stopper 12a is released from the fixing, and the clamp member 6 is pulled out from the top plate 2 edge portion to the outside. As shown in FIG. 7, when the clamp member 6 is pulled out until the support plate 6a is located outside the top plate 2 edge portion, the retaining portion 9 provided inside the square pipe material 23 becomes the square pipe material. It abuts on the side wall of the top plate 2 constituent member located inside the 23, and cannot be pulled out any more. In this state, since the clamp member 6 can rotate around the shaft member 8, the clamp member 6 is rotated and the position of the wheel 7 is turned upside down.

As shown in FIG. 8, when the clamp member 6 is turned upside down, the wheels 7 project to the surface 21 side of the top plate 2. Then, when the clamp member 6 is inserted into the edge portion of the top plate 2 again, the state shown in FIG. 9 is obtained.

9 and 10 show a state in which only the caster member 4 is inverted from the working posture X. The stopper 12a protrudes from the other stopper insertion hole 12b provided in the side plate 6b, and the caster member 4 is fixed in a state where the support plates 6a and 6a sandwich the top plate 2.

Finally, when the workbench-combined trolley 1 in such a state is turned upside down, as shown in FIG. 11, the top plate 2 has the surface 21 facing downward and the legs 3 standing upward. , The wheel 7 is in a moving posture Y in contact with the ground.

In the moving posture Y, it is possible to put luggage such as tools and equipment on the back surface 22 side of the top plate 2. Since the luggage placed on the top plate 2 is surrounded on all sides by the legs 3 and the fall prevention opening stopper member 5, it is prevented from falling from the top plate 2. With the workbench-combined trolley 1 as such a moving posture Y, the worker can move the workbench-combined trolley by placing a load on the top plate 2 and pushing or pulling the legs 3.

The workbench-combined trolley of the present embodiment can be used for purposes other than standing horses and trolleys. For example, a hole of about Φ25 mm can be made in the center of the top plate, and a handle of an umbrella can be erected in the hole, which can be used as a table.

(Other embodiments)
Next, another embodiment of the present invention will be described with reference to FIG. The workbench-combined trolley 10 of this embodiment is provided with a storage space 13 in addition to the above-described embodiment. In the following description, the same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

Specifically, the top plate 2 of the workbench combined trolley 10 is composed of an upper plate 201 on the front surface 21 side, a lower plate 202 on the back surface 22 side, and two left and right square pipe members 203 and 203. The space surrounded by the upper plate 201, the lower plate 202, and the two left and right square pipe members 203 and 203 can be used as the storage space 13. The storage space 13 may have any form, but in the present embodiment, a door member is provided at the end portion so that the storage space 13 can be opened and closed by opening and closing the door member. In the storage space 13, for example, the fall-preventing and opening-preventing member 5 removed from the legs 3 can be folded and stored. It is desirable to provide reinforcing members 204 and 204 between the square pipe members 203 and 203 and the storage space 13, respectively. Further, it is desirable that the back side of the upper plate 201 is provided with a plurality of top plate reinforcing members 205 in the longitudinal direction of the top plate 2. The top plate 2 can be reinforced by the reinforcing member 204 and the top plate reinforcing member 205, and the safety of the work table and trolley 10 can be enhanced.

1,10 Worktable combined trolley 2 Top plate 3 Legs 4 Caster member 5 Fall prevention combined opening stopper 6 Clamp member 6a Support plate 6b Side plate 7 Wheel 8 Shaft member 9 Retaining part 12 Fixing means 12a Stopper 12b Stopper insertion hole 12c Stopper insertion hole 13 Storage space 21 Front surface 22 Back surface 23 Square pipe material 201 Upper plate 202 Lower plate 203 Square pipe material 204 Reinforcing member 205 Top plate Reinforcing member X Working posture Y Moving posture

Claims (6)

A workbench-combined trolley including a rectangular top plate and a pair of legs foldable on the back surface side of the top plate.
The top plate is provided with at least four caster members at the edges.
The caster member has a clamp member having two support plates capable of sandwiching the edge of the top plate, and a wheel attached to one of the support plates.
The clamp member is attached so as to be upside down with respect to the top plate.
A working posture in which the surface of the top plate is directed upward, the legs are erected downward, and the wheels are positioned on the back surface side of the top plate.
It is characterized in that it can be displaced between a moving posture in which the surface of the top plate is directed downward and the legs are erected upward and the wheels are positioned on the surface side of the top plate. A trolley that also serves as a work table. The work table and trolley according to claim 1, wherein the clamp member has a U-shape in which two support plates and a side plate connecting the support plates are open toward the top plate. .. The caster member further has a shaft member extending from the side plate and inserted into the side surface of the edge portion of the top plate.
The clamp member can advance and retreat between a state in which the support plate sandwiches the edge portion and a state in which the support plate is pulled out from the edge portion, and the support plate is moved from the edge portion. The workbench-combined trolley according to claim 2, wherein the shaft member can rotate around the shaft member in a state of being pulled out to the outside. The workbench-combined trolley according to claim 3, wherein the caster member and the top plate are provided with fixing means for fixing the clamp member in a state where the support plate sandwiches the edge portion. The workbench-combined trolley according to claim 3 or 4, wherein the shaft member moves forward and backward together with the clamp member, and a retaining portion is provided at an end portion on the top plate side. Between the legs, a fall-preventing and opening-preventing member is erected to prevent the legs from opening during the working posture and to prevent the load placed on the back surface side of the top plate from falling during the moving posture. The workbench-combined trolley according to any one of claims 3 to 5, wherein the trolley is also used as a workbench.

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